private void LoadWad(Stream stream)
{
var bytes = new byte[stream.Length];
using (var br = new BinaryReader(stream))
{
bytes = br.ReadBytes((int)stream.Length);
}
string type = "";
for (var i = 0; i < 4; i++)
{
type += (char)bytes[i];
}
if (type != "WAD2")
{
string message = "Couldn't find WAD2 header";
if (stream is FileStream s)
{
message += " in " + s.Name + "!";
}
else
{
message += "!";
}
throw new InvalidDataException(message);
}
var textureCount = BitConverter.ToInt32(bytes, 4);
var dirOffset = BitConverter.ToInt32(bytes, 8);
for (var i = 0; i < textureCount; i++)
{
var entrySize = 32;
var entryOffset = dirOffset + (entrySize * i);
Int32 dataOffset = BitConverter.ToInt32(bytes, entryOffset + 0);
Int32 sizeInWad = BitConverter.ToInt32(bytes, entryOffset + 4);
Int32 sizeInMemory = BitConverter.ToInt32(bytes, entryOffset + 8);
char entryType = BitConverter.ToChar(bytes, entryOffset + 12);
char compression = BitConverter.ToChar(bytes, entryOffset + 13);
Int16 dummy = BitConverter.ToInt16(bytes, entryOffset + 14);
var sb = new StringBuilder();
for (var j = 0; j < 16; j++)
{
var c = (char)bytes[entryOffset + 16 + j];
if (c == '\0')
{
break;
}
else
{
sb.Append(c);
}
}
string name = sb.ToString().ToLower();
// 16 bytes for texture name
// 4 byte width
// 4 byte height
// 4 byte offset (from start of entry) of full res texture
// 4 byte offset of first mip level
// 4 byte offset of second mip level
// 4 byte offset of third mip level
// width x height bytes for full res texture
// (width / 2) x (height / 2) bytes for first mip level
// (width / 4) x (height / 4) bytes for second mip level
// (width / 8) x (height / 8) bytes for third mip level
var width = BitConverter.ToInt32(bytes, dataOffset + 16);
var height = BitConverter.ToInt32(bytes, dataOffset + 20);
var fullResOffset = BitConverter.ToInt32(bytes, dataOffset + 24);
var texture = new Texture(width, height, PixelFormat.Format32bppRgba)
{
Name = name
};
using (BitmapData data = texture.Bitmap.Lock())
{
for (var y = 0; y < height; y++)
{
for (var x = 0; x < width; x++)
{
Color color = Palette[bytes[dataOffset + fullResOffset + (width * y) + x]];
if (Translucents.Contains(texture.Name))
{
texture.Translucent = true;
color.A = 0.5f;
}
else if (texture.Name.StartsWith("{") && color == Palette[255])
{
texture.Translucent = true;
color.A = 0.0f;
}
data.SetPixel(x, y, color);
}
}
}
Add(name, texture);
}
}
public Wad2() : base()
{
Palette = new Palette();
Translucents.Add("trigger");
Translucents.Add("clip");
}
